Gas-engine.



J. HAMMELL.

GAS ENGINE.

APPLICATION FILED MAR.1,1912

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J. HAMMELL.

GAS ENGINE.

APPLICATION FILED MAR. 1, 1012 1,108,987, Patented Sept. 1, 1914.

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THE NORRIS PETERS Ca, PHOTO-LITHQ, WASHINGTON. u cv onrrnn s r-Arias p JOHN HAMMELL, or iCHICAGQlLLINOIS.

v Specification of Iietterslatent- Patntedsep Application filed March 1, 11912. if Serial No.-680,783.

GAS-ENGINE.

To all whom it may concern:

Be it known that LJOHN 'IIAMMELL, a citizen of the United States, residing at Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvementsin Gas-Engines, of which the following is a specification.

My invention relates to improvements in engines of the hydrocarbon tecycle type and more particularly to a rotary valve therefor designed to control the exit of the exhaust from and the admission of fuel to the engine cylinders.

The object of the invention is to provide a gas engine rotary valve which shall be so designed and mounted as to be proof against overheating, it being apparent that if a valve of this character overheats the explosion caused thereby produces excessive friction or sticking of the valve.

A further object is to provide a rotary valve which shall be simple of design and efficient in operation.

Other objects will appear hereinafter.

With these objects in view my invention consists in the novel construction and arrangement ofparts which will be hereinafter fully described and more particularly pointed out in the appended claim.

My invention will be more readily understood by reference to the accompanying drawings forming a part of this specification, and in which,

Figure 1 is an end view of my improved engine in its preferred form, Fig. 2 is a side elevation thereof, Fig. 3 is a vertical longitudinal section taken on line wa2 of Fig. 1, and Fig. 4c is a vertical transverse section taken substantially on line yy of Figs. 2 and 3.

The preferred form of my invention as illustrated in the accompanying drawings comprises a crank case 1 to which cylinders 2 are bolted, as clearly shown in Figs. 1 and 2, a fly wheel 3 being provided as in the conventional engine. Formed integral with each cylinder 2 and extending laterally from the top end thereof is a cylindrical casing 4:, these casings being in axial alinement. Cylinder water-jackets are provided and connected thereto are water pipes 5 and 6 through which the water is adapted to circulate for cooling the cylinders. Horizonftally and vertically extending partitions :a'ndi8 respectively are provided in the 'cy'l- 'mder waterackets which serve to deflect water, as indicated by arrows,' entering through the pipe 5 into and aroun'd the 'annular water space 9which surroundsfthe I :valve chamber'lO. A tubula'r rotary valve 11 is mounted in the valve chamber'IO and provided atone'extremity thereof is are duced portion 12 to which a bevel gear 13 is keyed, the latter being in mesh with and driven by a bevel gear 1 1. Bevel gear 1a is mounted at 1 the iipper'zextremity of an "inclined shaft 15 at the lower extremity of which a bevel gear 16 is mounted. A'driving bevel gear 17 meshing with the bevel gear 16 is mounted at one end of the crank shaft 18, the ratio of the gears interposed between the crank shaft 18 and the rotary valve 11 being such that the latter is driven at one-half the speed of said crank shaft. Formed in communication with one end of each valve chamber 10 is an intake passage 19 and with the other end an exhaust passage 20, peripheral recesses 19 and 20 being provided in the valve 11 to register respectively with the ports leading to said passages. A cylinder port 21 is provided in each cylinder 2, the same being adapted to communicate with the recesses 19 and 20 of the valve 11. Secured at each end of the valve chamber 10 is an annular bearing 22 in which the rotary valve 11 is ournaled, said bearings being formed preferably of anti-friction metal. Separating the recesses 19 and 20 is a division wall or flange 23 the periphery of which is adapted to fit closely in the chamber 10. WVhen two cylinders are used the valve 11 is provided with a double set of recesses 19 and 20 and with a centrally disposed cylindrical portion 24 which is nicely fitted in and adapted to rotate freely in the ends of the chambers 10. 25 designates a spark plug which is of ordinary design.

The operation of the engine is as follows: In Fig. 1 the direction of flow of the incoming charge is indicated by arrows, said charge entering the intake passage 19 and passing through the recess 19 and thence through the cylinder port 21 into the cylinder. The communication between the recess 19 and port 21 is shown as only partially open, but when the valve rotates in the direction indicated, said port and recess will obviously be in full communication. After the communication to the recess 19 is shut off then the port 21 will be in communication with the exhaust passage 20 which will be evident from the construction shown.

A gas engine of the construction set forth having no pocket valves or operating parts therefor is not only eflicient but silent in its operation.

WVhile I have shown what I deem to be the preferable form of my improved gas engine, I do not wish to be limited thereto as there might be various changes made in the details of construction and arrangement claim as new and desire to secure by Let ters Patent is:

In a gas engine, a cylinder and a valve 25 casing formed integral therewith, a tubular rotatable valve mounted in said casing having peripheral intake and exhaust recesses formed in the sides thereof, said valve being open at both ends and in communication with the air, said'cylinder being provided with a port adapted to register with said recesses and said casing being provided with intake and exhaust passages adapted to communicate with said intake and exhaust recesses, respectively, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses. i

JOHN HAMMELL.

Witnesses:

ARTHUR A. OLSON, J OSI-IUA R. H. POTTS.

Copies: of thirpatent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

